Date
May 13, 2025, 12:07 p.m.
| Environment | |
|---|---|
| qemu-arm64 | |
| qemu-x86_64 |
[ 20.012392] ================================================================== [ 20.012496] BUG: KASAN: double-free in kmem_cache_double_free+0x190/0x3c8 [ 20.012592] Free of addr fff00000c6616000 by task kunit_try_catch/209 [ 20.012643] [ 20.012696] CPU: 1 UID: 0 PID: 209 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250513 #1 PREEMPT [ 20.012794] Tainted: [B]=BAD_PAGE, [N]=TEST [ 20.012823] Hardware name: linux,dummy-virt (DT) [ 20.012874] Call trace: [ 20.012935] show_stack+0x20/0x38 (C) [ 20.013219] dump_stack_lvl+0x8c/0xd0 [ 20.013341] print_report+0x118/0x608 [ 20.014006] kasan_report_invalid_free+0xc0/0xe8 [ 20.014072] check_slab_allocation+0xd4/0x108 [ 20.014144] __kasan_slab_pre_free+0x2c/0x48 [ 20.014617] kmem_cache_free+0xf0/0x470 [ 20.014696] kmem_cache_double_free+0x190/0x3c8 [ 20.014932] kunit_try_run_case+0x170/0x3f0 [ 20.015058] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.015123] kthread+0x328/0x630 [ 20.015179] ret_from_fork+0x10/0x20 [ 20.015237] [ 20.015260] Allocated by task 209: [ 20.015340] kasan_save_stack+0x3c/0x68 [ 20.015451] kasan_save_track+0x20/0x40 [ 20.015537] kasan_save_alloc_info+0x40/0x58 [ 20.015581] __kasan_slab_alloc+0xa8/0xb0 [ 20.015673] kmem_cache_alloc_noprof+0x10c/0x3a0 [ 20.015719] kmem_cache_double_free+0x12c/0x3c8 [ 20.015761] kunit_try_run_case+0x170/0x3f0 [ 20.015803] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.015851] kthread+0x328/0x630 [ 20.015890] ret_from_fork+0x10/0x20 [ 20.015931] [ 20.015990] Freed by task 209: [ 20.016026] kasan_save_stack+0x3c/0x68 [ 20.016071] kasan_save_track+0x20/0x40 [ 20.016112] kasan_save_free_info+0x4c/0x78 [ 20.016154] __kasan_slab_free+0x6c/0x98 [ 20.016195] kmem_cache_free+0x260/0x470 [ 20.016235] kmem_cache_double_free+0x140/0x3c8 [ 20.016278] kunit_try_run_case+0x170/0x3f0 [ 20.016317] kunit_generic_run_threadfn_adapter+0x88/0x100 [ 20.016362] kthread+0x328/0x630 [ 20.016402] ret_from_fork+0x10/0x20 [ 20.016443] [ 20.016465] The buggy address belongs to the object at fff00000c6616000 [ 20.016465] which belongs to the cache test_cache of size 200 [ 20.016533] The buggy address is located 0 bytes inside of [ 20.016533] 200-byte region [fff00000c6616000, fff00000c66160c8) [ 20.016599] [ 20.016624] The buggy address belongs to the physical page: [ 20.016663] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106616 [ 20.016736] flags: 0xbfffe0000000000(node=0|zone=2|lastcpupid=0x1ffff) [ 20.016857] page_type: f5(slab) [ 20.016910] raw: 0bfffe0000000000 fff00000c1806c80 dead000000000122 0000000000000000 [ 20.016967] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 20.017027] page dumped because: kasan: bad access detected [ 20.017064] [ 20.017083] Memory state around the buggy address: [ 20.017125] fff00000c6615f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.017173] fff00000c6615f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.017223] >fff00000c6616000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 20.017267] ^ [ 20.017298] fff00000c6616080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 20.017375] fff00000c6616100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 20.017422] ==================================================================
[ 11.798585] ================================================================== [ 11.799088] BUG: KASAN: double-free in kmem_cache_double_free+0x1e5/0x480 [ 11.799380] Free of addr ffff8881029db000 by task kunit_try_catch/226 [ 11.799790] [ 11.799919] CPU: 0 UID: 0 PID: 226 Comm: kunit_try_catch Tainted: G B N 6.15.0-rc6-next-20250513 #1 PREEMPT(voluntary) [ 11.800035] Tainted: [B]=BAD_PAGE, [N]=TEST [ 11.800047] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 11.800069] Call Trace: [ 11.800082] <TASK> [ 11.800100] dump_stack_lvl+0x73/0xb0 [ 11.800132] print_report+0xd1/0x650 [ 11.800155] ? __virt_addr_valid+0x1db/0x2d0 [ 11.800181] ? kasan_complete_mode_report_info+0x64/0x200 [ 11.800203] ? kmem_cache_double_free+0x1e5/0x480 [ 11.800224] kasan_report_invalid_free+0x10a/0x130 [ 11.800248] ? kmem_cache_double_free+0x1e5/0x480 [ 11.800304] ? kmem_cache_double_free+0x1e5/0x480 [ 11.800342] check_slab_allocation+0x101/0x130 [ 11.800364] __kasan_slab_pre_free+0x28/0x40 [ 11.800384] kmem_cache_free+0xed/0x420 [ 11.800405] ? kmem_cache_alloc_noprof+0x123/0x3f0 [ 11.800425] ? kmem_cache_double_free+0x1e5/0x480 [ 11.800448] kmem_cache_double_free+0x1e5/0x480 [ 11.800468] ? __pfx_kmem_cache_double_free+0x10/0x10 [ 11.800488] ? finish_task_switch.isra.0+0x153/0x700 [ 11.800512] ? __switch_to+0x47/0xf50 [ 11.800642] ? __pfx_read_tsc+0x10/0x10 [ 11.800668] ? ktime_get_ts64+0x86/0x230 [ 11.800693] kunit_try_run_case+0x1a5/0x480 [ 11.800718] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.800739] ? _raw_spin_lock_irqsave+0xa1/0x100 [ 11.800791] ? _raw_spin_unlock_irqrestore+0x5f/0x90 [ 11.800813] ? __kthread_parkme+0x82/0x180 [ 11.800834] ? preempt_count_sub+0x50/0x80 [ 11.800857] ? __pfx_kunit_try_run_case+0x10/0x10 [ 11.800880] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.800902] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 11.800925] kthread+0x337/0x6f0 [ 11.800944] ? trace_preempt_on+0x20/0xc0 [ 11.800968] ? __pfx_kthread+0x10/0x10 [ 11.800988] ? _raw_spin_unlock_irq+0x47/0x80 [ 11.801008] ? calculate_sigpending+0x7b/0xa0 [ 11.801032] ? __pfx_kthread+0x10/0x10 [ 11.801053] ret_from_fork+0x116/0x1d0 [ 11.801071] ? __pfx_kthread+0x10/0x10 [ 11.801091] ret_from_fork_asm+0x1a/0x30 [ 11.801122] </TASK> [ 11.801134] [ 11.813018] Allocated by task 226: [ 11.813234] kasan_save_stack+0x45/0x70 [ 11.813542] kasan_save_track+0x18/0x40 [ 11.813939] kasan_save_alloc_info+0x3b/0x50 [ 11.814142] __kasan_slab_alloc+0x91/0xa0 [ 11.814608] kmem_cache_alloc_noprof+0x123/0x3f0 [ 11.814934] kmem_cache_double_free+0x14f/0x480 [ 11.815276] kunit_try_run_case+0x1a5/0x480 [ 11.815691] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.816053] kthread+0x337/0x6f0 [ 11.816309] ret_from_fork+0x116/0x1d0 [ 11.816508] ret_from_fork_asm+0x1a/0x30 [ 11.816947] [ 11.817040] Freed by task 226: [ 11.817406] kasan_save_stack+0x45/0x70 [ 11.817907] kasan_save_track+0x18/0x40 [ 11.818096] kasan_save_free_info+0x3f/0x60 [ 11.818406] __kasan_slab_free+0x56/0x70 [ 11.818651] kmem_cache_free+0x249/0x420 [ 11.819105] kmem_cache_double_free+0x16a/0x480 [ 11.819591] kunit_try_run_case+0x1a5/0x480 [ 11.819809] kunit_generic_run_threadfn_adapter+0x85/0xf0 [ 11.820125] kthread+0x337/0x6f0 [ 11.820327] ret_from_fork+0x116/0x1d0 [ 11.820754] ret_from_fork_asm+0x1a/0x30 [ 11.820899] [ 11.821000] The buggy address belongs to the object at ffff8881029db000 [ 11.821000] which belongs to the cache test_cache of size 200 [ 11.821883] The buggy address is located 0 bytes inside of [ 11.821883] 200-byte region [ffff8881029db000, ffff8881029db0c8) [ 11.822508] [ 11.822828] The buggy address belongs to the physical page: [ 11.823160] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1029db [ 11.823506] flags: 0x200000000000000(node=0|zone=2) [ 11.824093] page_type: f5(slab) [ 11.824411] raw: 0200000000000000 ffff888101ce8500 dead000000000122 0000000000000000 [ 11.825045] raw: 0000000000000000 00000000800f000f 00000000f5000000 0000000000000000 [ 11.825506] page dumped because: kasan: bad access detected [ 11.825752] [ 11.825851] Memory state around the buggy address: [ 11.826082] ffff8881029daf00: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [ 11.826860] ffff8881029daf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.827151] >ffff8881029db000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 11.827715] ^ [ 11.828029] ffff8881029db080: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 11.828383] ffff8881029db100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 11.828864] ==================================================================